About Mark Walker

With nearly 20 years of experience working in building relationships, digital sales, and revenue generating operations, Mark Walker is an expert in strategic planning, management, and revenue-generation for both Fortune 500 corporations and private firms and startups. Prior to co-founding DDH, Mr. Walker enjoyed an impressive career directing business development for NRG Energy and served as Chief Operating Officer at EBONY Media. Walker has served on multiple advisory boards, including Hitwise and Dentsu Aegis and currently serves on BRIDGE, Ad Club of NY Medication Committee, University of Texas Chancellors Council and has written articles and case studies appearing in Jupiter Research, Search Engine Watch, and the IAB.